Collector's note has 'fancy serial number,' rare label
                                
                                
                                    (Newser) -
                                    Sure, it says "$10" on the corner, but a Pennsylvania collector's bill is worth far more. Billy Baeder, of Royersford, Pa., is into  "fancy serial numbers"  and other unusual currency characteristics collectors value: printing mistakes, for instance. Fancy serial numbers, the  Philadelphia Inquirer  explains, include those in...